Shear guide



March 31. 1925.

H. ZIMMERMAN SHEAR GUIDE Filed Feb. 9. 1924 2 Sheets-Shut 1 A TTORNE YSH. ZIMMERMAN March 3l. 1925.

SHEAR GUIDE Filed Fb. e. 1924 IN V EN TOR ATTORNEYS Patented Mar. 3l,1925.

UNITED STATES HERMAN ZIMMERMAN, 0F NEW YORK, N. Y.

SHEAR GUIDE.

Application filed February 9, 1924. Serial No. 691,770.

T0 all ali/1,0m t may concern.'

Be it known that I, HERMAN Zini/mr.- MAN, a citizen of the UnitedStates, and a resident of the city of New York, borough of the Bronx, inthe county of Bronx and State of New York, have invented a new andImproved Shear Guide, of which the following is a full, clear, and exactdescription.

This invention relates to improvements in shear guides, and moreparticularly to a guide constituting a straight edge, which insuresstraight cutting of a piece of cloth and the like by a pair of shears orother suitable cutting device which is moved through the guide.

An object of the invention is, therefore, to provide a guide whichprevents loss due vto crooked or irregular cuttinO', which facilitatesthe cutting action, and which also functions to insure the cloth beingcut in uniform lengths, as the pieces when cut are disposed one abovethe other.

A further object is to provide a device of the character stated whichmay be removably secured to any ordinary cutting table, and which whennot desired for use can be removed so as not to interfere with theordinary functions of the table.

In cutting cloth into lengths with ordinary means, considerable loss iscaused by irregular cutting as it is diflicult to insure a straight cutwith ordinary shears and considerable time is consumed in placing theuncut cloth and holding the same to measure the cloth for the next cut',and it is the purpose of my invention to provide a device which greatlyfacilitates this operation and insures a uniform cutting action.

lVith these and other objects in View, the invention consists in certainnovel features of construction and combinations and arrangements ofparts which will be more fully hereinafter described and` pointed out inthe claims.

In the accompanying drawings- Figure 1 is a perspective Viewillustrating my improved device ,in operative position on a cuttingtable;

Figure 2 is a view in longitudinal section on the line 2-2 of Figure 1;

Figure3 is a broken plan view of my improved device in position on thetable;

Figure l is a fragmentary view in section on the line 4--1 of Figure 3;

Figure 5 is ay perspective view of one end of the guide bar; i

Figure 6 is a perspective of the guide bar holding clamp. 1 represents acutting table and 2 is my improved guide bar positioned above the tableand over which a strip of cloth 3 is fed from a bolt fl. 5 represents aclamp or weight which is positioned on the pile of cut lengths andreceives the end of the strip 3 so that when the cut is made along thebar 2 the length will be precisely like those already cut. The bar 2 maybe of any desired width, is sufficiently rigid for its purpose, and isprovided adjacent one edge with a pair of beads 6 constituting guideflanges at opposite sides of a groove 7 The groove 7 is of suliicientwidth to constitute a guide for a shear blade 8 and the like so that theshears can be moved through the guide and operated to cut the cloth in aperfectly straight line. The bar 2 is provided at one end with adepending normally vertical arm 9 which is positioned through alinedslots 10 in a clamp 11. This clamp 11 is of angular shape so that itsupper and lower members are positioned above and below the table 1,respectively, and a` set screw 12 is projected through the lower memberof the clamp and engages the bottom of the table to secure the clampthereto. A second setscrew 13 is projected through the intermediate orvertical portion of the clamp 11 and engages the arm 9 to clamp theguide bar 2 in any position of vertical adjustment.

In operation, the cloth 3 is fed from the bolt 4 across the bar 2, andthe end of the cloth is positioned under the clamp or weight 5. Theoperator then moves the shears through the guide groove 7 cutting thecloth in an absolutely straight line and the exact length of the clothpreviously cut. When one length is cut the cloth is again drawn off thebolt and placed under the clamp or 'Weight 5 and then cut, and thisoperation is repeated until the pile accumulates, when the bar 2 isadjusted vertically and the pile of cut lengths placed under the same.The bar 2 is then secured at this adjustment by means of the screw 13and the operation above described is repeated.

Various slight changes and alterations might be made in the general formof the parts described without departing from my to secure the bar atthe desired vertical adjustment.

Q. A Shear guide7 comprising :L straight bar having a shear guidinggroove thereon7 an angular clamp having a pair of alignedopenings'therein, L set screw in the elzunp adapted to secure the sameto a table, a depending arm on one end of the bar mova-ble intheopenings of the clamp, and n second set screw :in the clamp engaging thearm.

HERMAN' ZIMMERB'LLN

